Corkscrew



FIG. 1 is a perspective view of a corkscrew showing my new design;

FIG. 2 is another perspective posterior view thereof;

FIG. 3 is a top view thereof;

FIG. 4 is a right side view thereof;

FIG. 5 is a front view thereof;

FIG. 6 is a left side view thereof;

FIG. 7 is a back view thereof; and,

FIG. 8 is a bottom view thereof. 

CLAIM The ornamental design for a corkscrew, as shown and described. 